Does Android castrate the ARM's Jazelle technology?

Question

The justification that I\'ve seen for shall we say \"Bastardizing\" the Java bytecodes in Android was performance. (I suspect there is another reason.) However by changing the

Answer 1

Wikipedia: Dalvik virtual machine:

Unlike most virtual machines and true Java VMs which are stack machines, the Dalvik VM is a register-based architecture.

Being optimized for low memory requirements, Dalvik has some specific characteristics that differentiate it from other standard VMs:

• The VM was slimmed down to use less space.
• Dalvik has no just-in-time compiler.
• The constant pool has been modified to use only 32-bit indexes to simplify the interpreter.
• It uses its own bytecode, not Java bytecode.

Moreover, Dalvik has been designed so that a device can run multiple instances of the VM efficiently.

Edit: See Wikipedia: Open Handset Alliance. The founding member includes Intel, Motorola, Qualcomm, and Texas Instruments. ARM joined an year later in December, 2008. So, I guess it didn't make sense for these companies to rely on a proprietary technology by then non-member, when the goal was to create opensource iPhone/Blackberry competitor.